Wireless telegraphy.



W. M. BRUCE, 1R.

WIRELESS TELEGRAPHY.

APPLlcATloN FILED Dias. 1915.

Patented Jan. 1918.

Vlr

. UCE, 31E., 0F SPEENGFEL),

W'R'ELESS TELEGBAPHY.

i o eZZ wim/m may comme:

ie i?. known that i, `Wnzmmz M. BRUCE, 'ix? e citizen @i i'iie UnitedStates, residing Spziuglielci, in lie county of Clau-k and Seeci' @hievhave invented certain new and useful Improvements in lifeless Teieglzipliy, of which he fellewing is a speeiication. y

My invention elates to improvements in Wireiess 'telegmphjv ami lies forits Object 'i0 provide means when-by lie which are usually received. ona telephone receive? een be relayed to un, edina'y telegraph inrinieu,such as n seimde or recexciing (Leslies. vn he meme? Fig'ie is :Ldiagram, Fine. 2 te ff :we detziii'e views of parte oi the In thedrawings, a represenie an mfixlz telephone receiver ,viiich is eonneeedin the usuel in @Wireless circuit. a is the diaphragm ef seifi receive?Ywhich vilmtes in periods coi'espending e ois and dashes fiom the highfrequency cu'fen coming into lie receiver a. This receive? will 'bemounted upon n, sui'eG-le frame (use shown) anni there is manche@ o illediaphragme 'e fine thread-like cennectien E55 the opposite end 0E whichis :attached to en adiuetabie spring i5', suitably mounted in the frameWeek. To Lilie thread-like connection is etaehefi eine arm c of a pivoelever c, the pivot of which is marked sa, whose arms c2 and c3 haveateclied tlieree thread-like Comieeions c'-"' and e5 which extend ibo esliefpemlecl eziclie d'. This suspended briflie dl is preferably mounedWihin e euitabie, fame (l en which is also mouned a. vibreez 032. Thesuspeneiea. for elle irile f5 eensiss of 'thee-iiiee eenneetiens d@ anddi havinigf proper 'ension ajusmen; in elleA usual wey and to this eidieie e'iteehed eentacing eem e which is by the vilemtor 052, caused tevibrae vertically enelle, ehe e011- neeions above deserioeci from 'thediaphragm A te esciiiee ieteeiy unisex @viele the adjacent te eoniee'fsme L, is a neutral :mee and opp@ Ceml to which ne contee-img ema eneimally Yibieee. The ceiiuce 62 unifi es f in circuit with The circuitcan f Contact e2 und e3 by Wires; 'l and ifeiejf wife 3, to beti'eiy X:incl Wire f y eonaciug afm. The ieiey polarized relay and has :i leezileil' ite armature j" tlu'eugli e er awiz'e 5 to a sounder m ecerdei wlreG to battery X, and luy re armature f Of ille z'eizij;

preferably previ' the vibmting iev l ment oi 'lle lever c emi iie een@,1. e Emy be uned Lhzi 'die imum ei vibmion of the emite/ctie@ eemcoincide with he number 'viii ncuaing' 'feeeiver zwi accomplish shown ing, ,j pending lle lever c by thieeddi-Ke smlifeei c7 G8-and e9, one erilieee beine; preeeebiy provided with a spring; c?. the suppozzs c3 :mel69 en adjustabie spreecie @wie pi'evided 'with means r' posiien aidii'ieient im the lever c; isha-fee 'Liiieed-liie eiispe e er .l memesc@ fee-seen which heefi c by which the tension Epen lle Supporting;device may be peperiy ndjuf l Ey adjusting iiie teneicfi epefv vices thevibietione ef the sented; eim

be p'cperly tuned e0 che xeceweii Vibratione The result of iliiecenstmcien is that am zz normal ine erm e eeeeed the vibrate by @mevibrator Z2 to 3mm tile neuti'ei er ieeev peint e4 between lle contaese2 emi ,'iln'a'ebien of the eiiapln'agm causes 'j mei zum e te move etrighi; i normal vibrations and. the cel bln ments of he arm cause it ieA mets e2 er e3., engaged e battey 15:

cause the relay te meve 113s z and close the clieul fue the seuiltieneeting device end eine WiL closed during @he pelied 0i lie whichwill be e shei peeled fel e ile e longe? pensai fue e,

biased so it will fall back as soon as the diaphragm vibrations cease.

For the contacts, I preferably employ mercury as have found a moreperfect contact is secured in this Way. l preferably support thesemercurial contacts so that the only space between them is an insulatedneutral or zero point et. yi`he tendency of the liquid, such as mercury,to form in a globule being utilized so` as to form a Wall on neach sideof the neutral point as shown in Fig. 3. Apparatus of this kind hasbeendemontrated to be suiiiciently sensitive to respond to the vibrationsreceived on a diaphragm or ordinary telephone receiver and translatesuch vibrations into dots and dashes on an ordinary telephone recorder'or sounder.

I have shown and described a polarized relay in the local circuit foroperating the sounder or recorder, but this is not essential as variousforms of rclayscan be usedk for this purpose. A sluggish relaywhich willbe held up by the rapid making and breaking of the contactI due to thevibrating of the arm e, but one which would respond to the makes andbreaks between the vibra,

tions, such as shown in my former aten? No. 1,073,886 would operatesatisfactory.

I have used the Word diaphragm as applied to a telephonie receiver andby this l mean to include any vibrating device which would respond tohigh frequency currents as does the` diaphragm of a telephone receiver..

Having thus described my invention, l claim:

l. The combination of a diaphra L operatively connected to a Wirelesscircuit, a sus pendedcradle, an intermediate operating arm connectedwith said diaphragm and said cradle, an electro-magnetic vibratingdevice, and a contacting arm connected to said cradle and vibrated bysaid vibrating device in unison therewith and in a different directionfrom that vibrated by the said diaphragm, substantially as specified.

2.1n combination with an electromagnetic 'vibrating device, a contactarm con nected to said vibrating device so as to vibrate in unisontherewitn in one direction, independent means for vibrating said arm inanother direction, liquid contacts adjarestare cent to said arm andadapted to be brought into electrical connection therewith by the doubleset of vibrations, said contacts beingl separated by a neutral Zone andconnected in a local circuit as and for the purpose specified. i

3. The combination with a vibrating diaphragm, of a suspended bridle andmeans for connecting said diaphragm to said bridle, and a contacting,`arm on said bridle to respond to said vibration and independent meansfor causing said arm to vibrate at right angles to the plane otlvibration of said arm when moved by said diaphragm, and contactsadjacent to`said vibrating arm adapted to be engaged thereby bythe tivosets of vibrations as and for the purpose specified.

4. In a telegraph apparatus, a suspended contactingfarm, and contactingdevices adjacent thereto, a neutral or zero point between saidcontacting,r devices adjacent to which the said arm is normally locatedso it vibrates to and from said neutral point, a diaphragm receiver anda connection from said diaphragm to said suspended bridle to cause it tovibrate to a position adjacent to either of said contacts whereby thevibra tion of said diaphragm causes the arm to move to position adjacentto said contact and the independent vibration of said arm causes it tovibrate in contact therewith to complete the circpit as and for thepurpose specilied.

5. n an apparatus for Wireless telcgraphy, and in Vcombination with avibrating receiver, a connection trom said receiver to a vibratingcontact, means for causing said contact to independently vibrate in onedirection and to vibratie in unison with the receiver' in the otherdirection, said means involving devices for tuning the period ofvibration of the contactingr arm to coincide with the vibrationsactuating the receiver, and contacting1 devices in circuit with a tele-`graph instrument whose circuit is closed by the combined movements ofthe contact arm.

ln testimony whereof, I have hereunto set my hand this 22nd day ot'Novenlber 1915.

I l'VLlilAM M. BRUCE, JR. Witnessz CMAS. l'. WELCH.

